Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Gas turbine engine fan casing having a flange for fastening pieces of equipment

a technology for gas turbine engines and fan casings, which is applied in the direction of machines/engines, stators, liquid fuel engines, etc., can solve the problem that the flange of the fan casing is only a fraction of the thickness of the flange, and the flange is made through

Active Publication Date: 2013-08-08
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
View PDF8 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a fan casing with a flange that allows for easy removal of engine pieces without needing to remove the air inlet sleeve. The flange has a setback that strengthens it without compromising its mechanical strength. The fiber reinforcement is made up of two layers of fiber fabric, with the setback being only one layer's thickness. This further ensures that the other layers of fiber fabric are not degraded in their strength. This setback design also reduces the likelihood of any degradation in the mechanical strength of the fan casing when subjected to tangential forces.

Problems solved by technology

Furthermore, the setback in the flange of the fan casing is made through only a fraction of the thickness of the flange.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas turbine engine fan casing having a flange for fastening pieces of equipment
  • Gas turbine engine fan casing having a flange for fastening pieces of equipment
  • Gas turbine engine fan casing having a flange for fastening pieces of equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021]FIG. 1 shows a casing 10 within which it is possible to house a gas turbine aeroengine (not shown).

[0022]The casing 10 comprises a plurality of elements: namely in particular an air inlet sleeve 100 arranged at the inlet of the engine; and a fan casing 200 arranged downstream from the air inlet sleeve (“downstream” in the flow direction of the stream of gas passing through the engine). Each of these elements comprises a substantially cylindrical portion, respectively referenced 102 or 202, which portion is centered on a longitudinal axis X-X of the engine.

[0023]The inside surface of the cylindrical portion 102 of the air inlet sleeve 100 defines the air inlet passage into the engine. The inside surface of the cylindrical portion 202 of the fan casing serves to surround the tips of the fan blades of the engine and it incorporates or supports a retention shield (not shown).

[0024]At its downstream end, the cylindrical portion 102 of the inlet sleeve 100 is terminated by an annula...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a fan casing for a gas turbine engine, the casing having a substantially cylindrical portion that terminates at one end in an annular flange made of composite material. The flange includes at least one setback in a fraction of its thickness and at least one bolt for fastening pieces of equipment passing right through the flange in the axial direction, the bolt for fastening pieces of equipment having a head that presents a flat that is to bear flat against a rim of the setback, and a shank forming a stud for fastening pieces of equipment on the casing.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to gas turbine engine casings, and more particularly to fan casings made of composite material for gas turbine aeroengines.[0002]In a gas turbine aeroengine, the casing has a portion forming an air inlet sleeve with the function of defining the air inlet passage into the engine, and a portion forming a fan casing. A particular function of the fan casing is to retain debris, such as articles that have been ingested or fragments of damaged blades, which debris is projected by centrifugal force and needs to be prevented from passing through the casing and reaching other portions of the aircraft. The fan casing also supports a certain number of pieces of equipment of the engine, such as harnesses for fastening pipes conveying de-icing liquid or supports for fastening the electronic control unit of the engine.[0003]In known manner, the air inlet sleeve and the fan casing have annular flanges at their axial ends serving in par...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01D25/24
CPCF05D2300/603F05D2260/31Y02T50/672F02K3/06F02C7/32F01D25/243Y02T50/60F01D25/28F04D29/522F04D29/601
Inventor GAUDRY, FLORIANELISSEEFF, TIMOTHEEIMBOURG, FREDERICRATTE, GUILLAUME
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com